Pipe-joint for earthenware, &amp;c.



PATBNTED JULY 31-, 1906.

no. 8273109. I

0. H. & E. H. BENTLEY. PIPE JOINT FOR EARTHENWARB, 6:0. APPLIUATIOP TILED NOVJM, 1905.

Faai.

WITN15511?v lu'vgnrons U ITED srA rns PATENT OFFICE.

CHARLES HENRY BENTLEY AND ERNEST H A IGH BENTLEY, OF HALIFAX,

- ENGLAND. PIPE-JomTFOR EAf-RTHENWARE; ac.

Specification of Letters Patent.

fatented July 31, mos.

Application filed November 24, I905. Serial No. 288,961.

Be itknown that we, CHARLES HE RY BENTLEY and ERNEST HAIGH BENTLEY, subjects of the King 'of'Great Britain, residing at Halifax, in the countyof York, England, have invented new and useful Improvements in Pi eloints forv Earthenware and other Suita 1e Pipes of which the following is a.

specification.

7 This invention is more particularly appli cable to earthenware pipes, but is equally suitable for gas orwater pipes; and our object is to construct a joint for these pipes which is self-adjusting to a correct alinement,

be more easily and quickly laid, may he laid by unskilled labor, and while rendering leakage impossible the making of said joint greatly strengthens the pipe at this part. W e attain these objects in the manner illus trated in the-accompanying .drawingain Figure 1 is an elevation, partly in section,-

of our improvedpipe-joint, showing the in sertion of the spigot end of pipe preparatory to adjustment. Fig. 2 is a similar view to Fig. 1, but with the spigot end in position and-the joint completed.

Similar letters refer to similar parts throughout both the views. y

In constructing our improved joint we form the-socket A of each pipe B with an inner conical or taper face C, having a strai ht bed or seating D at its narrowest part, so t at when the next length of pipe is oined up its inner surface is flush with or in alinement with that of the pipe already laid. (See 2.)' Also the socket A is further pro- Fi i vided with an inner-flange or rim E, sufficiently deep yet permit of the ready insertion cf the spigot end of the next pipe and provide the required clearance or opening F for the introduction ofthe bindin material.

At the spigot end of sec pi e is a suitable annular recess or neck G of a s ape or section corres ondmg with the taperor inner face C of socl r et, so that when two pipes are in position anannular chamber, m1ter, dovetail, or arrow-head in shape or section encircles the spigot end. This chamber is filled with cemerit, lead, or other binding 'material H, Grooves J are provided in the socket to equalize and counteract the effect of any great strength contraction of thebindingmaterial and prevent the same from twisting loose.

The taper or conical face C also serves to .seat D. When no further forward movethe pipe is butt up and ment is possible, ready for the cement or other filling.

The clearance or space F between thg inner flange or rim E in the socket and the,

spigot end of pipe being less than the cementchamber at its greatest diameter, the binding material when set renders any subsequent movement of the pipes in any direction an impossibility. Therefore a perfect joint of themselves is obtained. Further, there is no possibility of spigot dropping when laying or fixing the pipes, as the taper face in the socket supports the spi ot and until the filling has been applied and the joint completed, and as the said spigot end also, abutsagainst its seating D no cement or other filling can passinto the pipes.

hat we claimas our invention, and. desire to secure by Letters Patent, is

The combination, with a pipe-section havpg-a socket provided with a flat surface D at it s bottom/an internally-projecting flange E at its. top and a conical surface 0' arranged between the said surface and flan e and provided with longitudinal grooves; of a cylindr cal pipe-section having no head "or projection but havin a circumferential groove having a conica side and a straight side, said conical side being 0 posite the conical surface C and said straigllt side bcin in line with the inner edgeof the flange E when the end of the pipe abuts against the flat surand as durable as the pipes face I), a packing-space being formed which is narrower between thesaid flange and pipe than between the bases of their said conical surfaces.

In testimony whereof we have hereunto witnesses. v i CHARLES HENRY BENTLEY. v ERNEST HAIGH BENTLEY. Witnesses: I

c A. REED, j WILFRED AmnRsoN.

afiixed our signatures in the presence of two 

